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The skeletal decay of wood, once live -
Not through growth, but electric hum!
Station north to Junction south,
Traffic passed, and signals come
Announcing mundanity, routine and work,
Though now to progress must succumb.
Broken telegraph pole on the Midland Railway. The pot-heads interspersed with the Cordeaux insulators betray the presence of a junction in the circuit, perhaps terminating in the nearby signal-box.
The outrigger-mounted red power insulator sits un-naturally horizontal, its crossarm severed completely from the pole.
Essais des Courses O3Z
Essais le 8 Octobre 2010
Final le 9 & 10 Octobre 2010
sur le circuit Carole (93)
These photos were taken in the workshop quite some time ago. I was just playing around with the 105mm macro.
SB-800 fired from the D200 positioned camera left.
Essais des Courses O3Z
Essais le 8 Octobre 2010
Final le 9 & 10 Octobre 2010
sur le circuit Carole (93)
Battery circuit board pulled out - 6 way fuse box, aluminium safety cover for DC step up circuit and terminal block for negative connections. All cables are secured with restrainers to prevent accidental popping of wires.
Alex RINS SPA
Team SUZUKI ECSTAR
SUZUKI
MotoGP
Test Qatar 2017 (Circuit Losail)
10-12/03.2017
photo: MICHELIN
Circuit that I used to measure the flash duration of the microsecond flash. Saturation of the photodiode must be avoided, it helps to bounce the flash off of a closeby white wall.
Don't you just love my handwriting?
A BPX61 photodiode is used which does have the peak sensitivity well into the IR characteristic of silicon detectors. The 50ohm terminator is not required if the scope has a 50-ohm input impedance setting (mine does not). Also important to make sure that your choice of resistor is still primarily resistive at frequency so no wire wound resistors!